CAJ | 학술논문

为研究翘嘴鳜(Siniperca chuatsi)早期阶段形态性状的生长规律和生长特征,并判定其最佳生长季节体格与月龄的关系,采用主成分和判别分析的方法对2~6月龄翘嘴鳜的全长、体长、体高、头长、眼径、尾长、尾柄长、尾柄高和体质量等9个性状进行分析。结果表明：翘嘴鳜各月龄各性状间均呈不同程度的正相关,各月龄体质量、全长、体长和体高之间显著相关,眼径与其他性状的相关系数均较小；各月龄第一主成分始终指向翘嘴鳜的生长发育情况,第二主成分有所不同,2~4月龄指向眼睛发育情况,5和6月龄分别指向头部发育和尾部发育情况。通过建立判别式来判断错过最佳生长季节翘嘴鳜的体格与大小相符的月龄,判别结果表明,总的判别准确率为98.87%。翘嘴鳜早期阶段的体长(L)–体质量(W)关系式为： W=2.58×10–2L2.9985(R2=0.994),表明翘嘴鳜早期生长属于等速生长。本研究证明了体质量、体长和体高是影响翘嘴鳜早期生长阶段最重要的性状指标,建立了翘嘴鳜早期生长阶段的判别式,发现了翘嘴鳜早期生长阶段为等速生长,为翘嘴鳜早期生长阶段的选育提供理论依据和理想的测量指标。
위연구교취궐(Siniperca chuatsi)조기계단형태성상적생장규률화생장특정,병판정기최가생장계절체격여월령적관계,채용주성분화판별분석적방법대2~6월령교취궐적전장、체장、체고、두장、안경、미장、미병장、미병고화체질량등9개성상진행분석。결과표명：교취궐각월령각성상간균정불동정도적정상관,각월령체질량、전장、체장화체고지간현저상관,안경여기타성상적상관계수균교소；각월령제일주성분시종지향교취궐적생장발육정황,제이주성분유소불동,2~4월령지향안정발육정황,5화6월령분별지향두부발육화미부발육정황。통과건립판별식래판단착과최가생장계절교취궐적체격여대소상부적월령,판별결과표명,총적판별준학솔위98.87%。교취궐조기계단적체장(L)–체질량(W)관계식위： W=2.58×10–2L2.9985(R2=0.994),표명교취궐조기생장속우등속생장。본연구증명료체질량、체장화체고시영향교취궐조기생장계단최중요적성상지표,건립료교취궐조기생장계단적판별식,발현료교취궐조기생장계단위등속생장,위교취궐조기생장계단적선육제공이론의거화이상적측량지표。
In order to research the early-stage growth of morphological traits of Siniperca chuatsi and judge the age matching with the size of S. chuatsi missing the best growing season, data of body mass, total length, body length, body depth, head length, eye diameter, tail length, caudal peduncle length, caudal peduncle depth were collected from S. chuatsi at 2 to 6 months of age in this study. The morphological traits were analyzed by principal component and dis-criminant analysis. The results showed that there are different degrees of correlation among all the morphological traits at different age phases, the relationships between body mass and total length and body length and body depth are rela-tively higher, and that between eye diameter and other traits is relatively lower. The first principal component always reflects the growth and development of S. chuatsi at all the age phases. The second principal components of S. chuatsi at different months of age are different. The second principal component reflects the development of eyes from 2 to 4 months of age, while that reflects the development of head and tail at 5 and 6 months of age, respectively. The month age closely related to the size of S. chuatsi which has missed the best growing period can be typed by employing the discriminant equations established in this paper, the method is stepwise discrimination analysis and the result shows 98.87%of accuracy. The body length-mass relation equation is W=2.58×10–2L2.9985(R2=0.994) in the early stage of S. chuatsi, which demonstrate that the body mass and length of S. chuatsi grow in similar velocity. This study proved that body mass, body length and body depth are the most important morphological traits in the early growth stage of S. chuatsi, established the discriminant equations in the early growth stage of S. chuatsi, demonstrated that the body mass and length of S. chuatsi grow in similar velocity. This paper provides theoretical evidence and perfect measure targets for breeding of S. chuatsi in the early growth stage in aquaculture.